Antiskid or antislip tread.



A. l. OEHRING.

ANTISKID 0R ANTISLIP TREAD.

APPLICATION FILED IAN.24, 1916.

Lm Lm 9 Patented Jan. 9, 1917.

AUGUST J. OEHRING, OFiCHICAG-O, ILLINOIS, ASSIGNOR OF ONE-HALF TO ALBERTL.

TUCKER, OF CHICAGO,

ILLINOIS.

ANTISKID OR ANTISLIP TREAD.

Specification of Letters Patent.

Patented Jan. 9, 1917.

Application led January 24, 1916. Serial N o. 73,773.

To all whom t may concern:

Be it known that I, AUGUST J. OEHRING, a citizen of the United States,and a resident of Chicago, in the county of Cook and State of Illinois,have invented certain new and useful Improvements in Antiskid or Antislip Treads; and I do hereby declare that the following is a full,clear, and exact description thereof, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,which form a part of this specification.

his invention relates to an anti-skid tread and consists of the mattershereinafter described and more particularly pointed out in the appendedclaims.

The object of the invention is to provide an anti-skid or anti-sliptread, applicable, as will be apparent, to various uses, which will notonly be efficient in operation to prevent slipping or skidding but whichwill be simple of construction and cheap to manufacture and to apply tothe particular article with which it is to be used.

he more immediate object of the invention is to provide an anti-skid oranti-slip tread for shoes, (commonly known as rubbers and the like andthe invention as-illustrated herein more particularly is applied for usein connection lwith the last named article. It will be apparent,however, that it may be applied for use in connection withv variousother articles or devices where an anti-slip or anti-skid tread isrequired and it is therefore to be understood that the invention is inno way to be limited to its .particular application' as shown anddescribed in the drawings and in the following description.

The various advantages of my improvement will appear more clearly andwill be manifest to those familiar with the art as I proceed with myspecication.

In the drawings, Figure 1 is a, perspective view of a golosh or what isusually called a rubber.) provided with. a tread made according to myinvention, the upper and sole of the golosh being partly broken away toillustrate the construction of the tread. Fig. 2 represents a bottomplan of the same. Fig. 3 represents a transverse section through Fig. 2as the parts of the same appear before the outer sole of the golosh hasbeen vulcanized or otherwise attached to the upanti-slip or Fig. 4 is atransverse sectionas the same would appear after the golosh is iinished.Fig. 5 is a perspective view representing a Ifragment of a plate whichforms a part of my improved tread in the lform of the inventionillustrated herein.

Referring now to that embodiment of my invention illustrated in thedrawings in which it is shown applied to a golosh 10 indicates the upperor main body of the rubber and 1l indicates the tread of the sole andheel, the latter being turned up at the back of the heel to provide alug or'frear offset l2 for the engagement of the toe of one foot in thedislodgment of the golosh (or rubber from the other foot.

he sole consists of the usual inner sole 13 and of the heavier outer orsole proper 14, which are vulcanized or cemented together to form anintegral sole body l5 as illustrated in Fig. 4. The upper 10 may be ofany usual construction comprising the inner canvas lining 16 and theouter coating of rubber 17 which, in the process of vulcanizing orotherwise are suitably joined to the inner and outer soles.v The innersole 13 also has a canvas layer 13a. The parts so far described (orrubber ordinarily sold and familiar to all.

In providing such an article with my improved anti-skid or anti-sliptread in the preferred` form of construction, a metal plate 28 isinterposed between the inner sole 13 and the sole proper 14. This plateis cut points 19,

per.

to the trade plate and constitute friction They are preferably so formedthat they have .converging webs 20, which meet, when/thus bent down, ina. vertical line, thus presenting an angular ridge in one direction anddiverging in the opposite direction.

he converging webs or plates 20y are such depth or vertical length thatthey extend through the sole or tread of the shoe with their bottom ortread edges 20a 20a substantially in the plane of the surface of-saidsole or tread when the latter is of its normal thickness and notcompressed, as when bearing weight. When the tread or sole 14 which ismade of yielding or compressible, elastic material (in this case rubber)is compressed under weight, as of the wearer inwalking,

are those usually in the golosh i condition, any snow or ice ,pery iceor snow the bottom edges 20EL of the webs 20 comprising the frictionstuds 19 project beyond the tread surface. Any number of the saidfriction studs 19 may be provided in the sole of the golosh (rubber) andalso in the heel of the same and these friction studs are pref erablyarranged symmetrically both in the sole and in the heel as shown in Fig.2, wherein there are illustrated three rows 19a, 19b and 19, both in thesole and in the heel.

, The friction studs are preferably arranged with their converging webs2020 disposed so that those in the sole of the rubber converge forwardlywhile those in the heel converge rearwardly,l thus opposing the bestresistance against slipping in either direction.

The plate carrying the friction studs may be secured in place in anyconvenient or well known manner and in the case of a golosh it ispreferably secured in place when the outer sole 11 is vulcanized, orcemented to the inner sole 13 and to the bottom edges of the upper 10.In this process the webs S20 forming the converging friction studs 19may become vulcanized to the rubber material of the outer sole. But whenthe golosh is used, the point-forming webs will break through thevulcanized joint connecting them to the rubber sole through which theyproject and will act as now described.

In the use of the article (in this case the golosh) on a slipperysurface such as ice, snow, or the like, when the tread surface isbrought` into engagement with the said surface, the weight applied tothe tread will act to compress the elastic yielding or compressiblematerial (rubber) of the tread 11, that is of the sole or heel, leavingthe rigid, converging webs 20 forming the friction studs, to projectslightly beyond or below the said tread surface. These rigidprojections, or friction studs,

surface and will act to prevent slipping of the sole or tread of thegolosh on said surface.

When, the foot is raised in walking the yielding or compressible elasticpad forming the body of the tread will resume its normal non-compressedor non-deformed condition, thus bringing its surface again into theplane of the bottom edges E20a of the friction studs `19, so that saidpoints together again 'present a surfaceflush with the bottomI surfaceof the tread. In the movement of the compressible, elastic treadmaterial relative to the said friction studs in thus returning to itsnormal non-compressed, non-deformed or other particles that havecollected on said friction studs will be stripped therefrom. The points19 are thus cleaned so that no matter what the consistency `0r characterof the material forming the slippery surface with which the tread isbrought into contact and no will engage the slip.

and will be kept in suitable condition for each engagement with the saidslippery surface.

Vhile I have shown my improved tread as applied to a golosh (rubber) andthat is the primary intendment of the invention, it will be manifestthat it may be variously applied to advantage.

An integral plate from which the points are stamped asin the case of theembodiment of the invention shown in the drawings, provides the simplestmeans for properly uniting or connecting the friction studs in suitablerelation with the tread body, that is to say, the yielding orcompressible, elastic pad with which the non-yielding friction studs areadapted to coact lto provide the tread surface. But it will be'manifestthat this is but one way of thus connecting and associating the frictionstuds with the said pad and also of connecting thesaid friction f studsin suitable or primarily determined relation with each other. Theprinciple of the invention depends upon a friction stud or engagingmember made of non-yielding material which is adapted to project throughbut is normally protected by a yielding or compressible, elastic padthat forms the body of the tread,-the friction stud ends terminatingsubstantially in the tread surface of the tread pad.

The plate from which the friction studs are stamped, in the embodimentof the invention illustrated herein, not only provides a convenientmeans for holding the friction studs in their predetermined desiredrelation, and also a means for securing them in the sole of the golosh,but it also provides an efficient backing member against which theyielding or compressible, elastic pad forming the body of the tread (thesole and the heel) may be compressed, while at the same time holding thenon-yielding friction studs rigidly down in their work.

While in describing my invention I have referred to certain details o fmechanical construction and arrangement of the parts it will beunderstood that the invention is in material of the pad, and meansproviding a backing against which said pad may be compressed relative tosaid Webs, to expose the converging bottom edges of said Webs.

2. An anti-skid or anti-slip tread, comprising a pad made of elasticmaterial, a plurality of spaced, non-yielding studs fixed in said pad,said studs each consisting of two vertical sheet metal Webs whichconverge in one direction only, the bottom edges of said Websterminating in the plane of the tread surface of the pad, the 'Websforming said studs being surrounded on all sides by the material of thepad, and a plate in said pad to which said stud Webs are fixed.

3. An anti-skid or anti-slip tread, comprising a pad ofelastic material,a sheet metal plate in said pad, and a plurality of spaced, non-yieldingstuds fixed insaid pad,

said studs each vconsis'zting of two vertical sheet metal Webs punchedfrom said plate and depending therefrom, said Webs converging in onedirection only to form a V, the converging bottom edges of said Websterminating in the plane of the tread surface of the pad, and the Websforming said studs being surrounded on all sides by the material of thepad.

In'testimony that'I claim the foregoing as my invention I aHiX mysignature in the presence of two Witnesses, this 21st day of January A.D. 1916.

AUGUST J. OEHRING.

Witnesses:

T. H. ALFREDS, KARL W. DoLL.

